Abstract
WS2 and PEDOT-PSS were individually characterized with the goal of analyzing charge transport across a hetero-junction formed by these two materials. In thermal equilibrium electron flow from the WS2 conduction band into the polymer LUMO level leads to band bending that creates a potential barrier preventing further current. The measured current-voltage (IDS-VDS) curve across the hetero-junction was non-linear and asymmetric similar to a diode, with a turn-on voltage of 1.4V and a rectification ratio of 12. The device I–V data were analyzed using the standard thermionic emission model of a Schottky junction and yielded an ideality parameter of 1.9 and a barrier height of 0.58eV. This facile technique is the first report on a nano-diode fabricated using WS2 and PEDOT-PSS, opening up the possibility of extending this work to include other layered transition metal dichalcogenides and conducting polymers.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
